8/12 roof pitch
33.69° angle
A 8/12 roof rises 8 in for every 12 in of run: a 66.7% slope with a 1.202 area multiplier.
| Pitch | 8 in 12 (8:12) |
|---|---|
| Angle | 33.69° |
| Slope | 66.7% |
| Roof area multiplier | 1.2019 |
| Rafter length per foot of run | 14.42 in |
| Type | A conventional pitch |
Roofing for a 8/12 pitch
Suitable for asphalt shingles, metal, tile and most other roofing with standard underlayment. Steep enough that roofers use roof jacks, toe boards or a harness.
Rafter length at 8/12
| Run (half the span) | Rise | Rafter length (before overhang) |
|---|---|---|
| 10 ft | 6.67 ft | 12.02 ft |
| 12 ft | 8 ft | 14.42 ft |
| 14 ft | 9.33 ft | 16.83 ft |
| 16 ft | 10.67 ft | 19.23 ft |
Change the numbers
Other roof pitches
Questions
- What angle is a 8/12 roof pitch?
- 33.69 degrees.
- What is a 8/12 roof pitch as a percentage?
- 66.7%: the roof rises 8 inches for every 12 inches of run.
- What is the roof multiplier for a 8/12 pitch?
- 1.202. Multiply the roof’s flat footprint by 1.202 to get its actual surface area.
- Is a 8/12 roof walkable?
- Steep enough that roofers use roof jacks, toe boards or a harness.